There’s a moment in every project that separates the amateurs from the pros, the frustrating from the fluid. For me, it was while building a backyard deck. I was using a standard cordless drill to drive hundreds of 3-inch deck screws into pressure-treated lumber. My wrists ached, the drill battery died every thirty minutes, and I stripped more screw heads than I care to admit. The drill would strain, cam-out, and transfer all that rotational torque directly into my arm. It was slow, painful, and inefficient. That’s the exact problem a dedicated impact driver is built to solve. It’s not just about turning a screw; it’s about delivering concussive, rotational blows that drive fasteners with relentless force and minimal user strain. Without one, you’re fighting the tool instead of working with it, risking stripped screws, damaged workpieces, and sheer exhaustion on large projects.
- LED LIGHTING: Keep your work illuminated with the LED lighting array located just below the quick-connect chuck
- TEXTURED HANDLE: The compact design of this power tool is complemented with the textured rubber grip, which gives you superior handling, even in slippery conditions
What to Consider Before Buying an Impact Driver
An impact driver is more than just an item; it’s a key solution for anyone who regularly drives long screws, lag bolts, or other large fasteners. Unlike a standard drill that provides constant rotational force, an impact driver uses a spring, hammer, and anvil mechanism to deliver powerful bursts of torque. This action not only drives fasteners with incredible speed and efficiency but also prevents the bit from slipping out of the screw head (cam-out) and saves your wrists from the strain of resisting that torque. It’s the go-to tool for deck building, framing, automotive repair, and any job where driving power is paramount.
The ideal customer for this type of product is someone facing repetitive or high-torque fastening tasks. This includes professional tradespeople like electricians, carpenters, and mechanics, as well as serious DIY enthusiasts tackling major home renovations or woodworking projects. If you find your standard drill struggling or you’re tired of pre-drilling holes for every large screw, an impact driver will revolutionize your workflow. However, it might not be suitable for those who primarily need to drill precise, clean holes or work with delicate materials where the high torque could cause damage. For those users, a quality drill/driver with a clutch is a better primary tool.
Before investing, consider these crucial points in detail:
- Dimensions & Space: The physical size of an impact driver is critical, especially for mechanics or cabinet installers who work in confined areas. Look at the head length (front to back). A more compact tool, like the Milwaukee 2656-20 M18 1/4 Inch Hex Impact Driver, allows you to get into engine bays, between studs, and inside cabinets where larger tools simply won’t fit.
- Capacity/Performance: The two key metrics are torque (measured in inch-pounds or in.-lbs.) and impacts per minute (IPM or BPM). Higher torque means more power to drive larger fasteners. Higher IPM means the tool drives those fasteners faster. The 1,500 in.-lbs. of torque on this Milwaukee is a fantastic sweet spot for most common applications, from deck screws to smaller automotive bolts.
- Motor & Battery System: Consider the motor type—brushed or brushless. Brushed motors, like the one in this model, are a proven, cost-effective technology known for reliability. Brushless motors offer better efficiency, longer runtime, and less maintenance but come at a higher price. More importantly, consider the battery ecosystem. If you already own tools from a specific brand’s 18V line, buying a “bare tool” is an incredibly economical way to expand your arsenal.
- Ease of Use & Ergonomics: You’ll be holding this tool for hours, so comfort is key. A textured rubber grip, good balance, and a responsive variable speed trigger are non-negotiable features. Also, look for conveniences like an onboard LED light for illuminating dark workspaces and a quick-connect chuck for fast bit changes.
While the Milwaukee 2656-20 M18 1/4 Inch Hex Impact Driver is an excellent choice, it’s always wise to see how it stacks up against the competition. For a broader look at all the top models, we highly recommend checking out our complete, in-depth guide:
- Brushless motor for increased runtime and durability
- DCD771 in cordless drill combo kit features two speed transmission (0-450 / 0-1500 RPM)
- Compact (7.6 in. front to back), lightweight design fits into tight areas
First Impressions: A Familiar Feel of Uncompromising Durability
Pulling the Milwaukee 2656-20 M18 1/4 Inch Hex Impact Driver from its packaging, there’s an immediate sense of purpose and durability. This isn’t a flashy, gimmick-laden tool; it’s a solid piece of equipment built for the job site. The signature Milwaukee red and black housing feels robust, and the textured rubber overmold on the grip is substantial, providing a secure hold even with greasy or sweaty hands. At just over 1.5 pounds (bare tool), it has a pleasing heft that speaks to its internal components without feeling unwieldy. Clipping in one of our M18 batteries, the tool balances perfectly in hand. The variable speed trigger has a smooth, predictable travel, and the forward/reverse switch clicks into place with a satisfying authority. The LED light, positioned just below the chuck, is a simple but essential feature that immediately illuminates the work area when the trigger is pulled. Compared to some of the newer, ultra-compact models, it has a slightly larger frame, but it feels like a trade-off for proven, rugged construction that’s ready to be put to work right out of the box. For anyone already invested in the M18 ecosystem, this bare tool option is a no-brainer for adding a dedicated impact driver to the team.
What We Like
- Impressive torque (1,500 in.-lbs.) for its class and price point
- Exceptional durability and build quality, designed for job site abuse
- Excellent ergonomics with a comfortable, secure textured grip
- Great value as a “bare tool” for existing Milwaukee M18 battery users
- Variable speed trigger offers precise control over power output
What We Didn’t Like
- Uses an older brushed motor, which is less efficient than modern brushless options
- Lacks multiple speed/torque settings found on premium models
Deep Dive: Deconstructing the 2656-20’s On-the-Job Performance
After weeks of testing on projects ranging from garage shelving and automotive maintenance to framing a new workshop wall, we have a comprehensive understanding of where the Milwaukee 2656-20 M18 1/4 Inch Hex Impact Driver truly shines and where its limitations lie. This isn’t just about spec sheets; it’s about how this tool performs when you’re on a ladder, under a car, or in the middle of a complex assembly.
Unrelenting Power: The 1,500 in.-lbs. Torque Engine
The headline feature of any impact driver is its torque, and the 1,500 in.-lbs. delivered by the 2656-20 is nothing short of impressive. This isn’t just a number; it’s the tangible force that makes difficult jobs easy. Our first test was driving 6-inch lag bolts through a pressure-treated 4×4 into a wall stud without a pilot hole. A standard drill would have stalled instantly. The Milwaukee 2656-20 M18 1/4 Inch Hex Impact Driver didn’t even hesitate. With a squeeze of the variable speed trigger, the tool engaged its impact mechanism, producing a rapid series of hammering sounds (the classic “brrrrappp”) as it drove the bolt home smoothly and consistently. There was almost no rotational force transferred to my wrist, which is the magic of an impact driver.
We found this performance to be consistent across various applications. Sinking hundreds of 3-inch deck screws became a fast, one-handed operation. In the automotive bay, the tool proved its mettle. As one user confirmed in their feedback, it had no trouble zipping off 14mm caliper bolts, splash shields, and engine covers. This makes it a fantastic time-saver for light-to-medium duty automotive tasks. However, it’s also important to understand its limits. We validated another user’s finding that it struggled with larger, high-torque fasteners like 17mm caliper bracket bolts that were factory-tight. This isn’t a flaw; it’s the reality of its power class. For those heavy-duty bolts, a larger 1/2-inch impact wrench is still the right tool. But for 90% of the fasteners a mechanic or serious DIYer encounters, this impact driver has more than enough power to get the job done fast.
Ergonomics and Job Site Usability
Power is useless if the tool is a nightmare to handle. Fortunately, Milwaukee has nailed the ergonomics on this model. The T-handle design is exceptionally well-balanced, especially when paired with a compact M18 battery. The textured rubber grip, a hallmark of Milwaukee tools, provides a confident, comfortable hold that reduces vibration and prevents slipping. We used it for an entire day building out wall frames, and the lack of hand fatigue was remarkable. The variable speed trigger is a critical component of its usability. It’s incredibly responsive, allowing for delicate control. You can start a screw slowly to get it seated properly and then ramp up to full power to drive it home, all with one finger. This level of control minimizes stripped screws and damage to the workpiece.
Its compact design is another major win. At just under 5.7 inches in length, it’s short enough to fit between 16-inch on-center studs and into tight corners inside cabinetry. We were able to maneuver it inside an engine bay to remove hard-to-reach bolts with ease, something that would be impossible with a larger impact wrench or even a bulky drill. The integrated LED light is bright and well-positioned, effectively illuminating the exact point of contact. While it can cast a slight shadow from the chuck, it’s a massive improvement over working in the dark. Several users praised how “smooth” and “easy” the tool is to use, and our extensive testing confirms this. It’s an intuitive and comfortable tool that simply lets you focus on the task at hand. You can experience this top-tier ergonomic design for yourself by checking out the latest offers.
The Brushed Motor and REDLINK Advantage
One of the key distinctions of the Milwaukee 2656-20 M18 1/4 Inch Hex Impact Driver is its brushed motor. In an era dominated by brushless technology, this might seem like a disadvantage, but it’s more of a trade-off. Brushed motors are a time-tested, reliable technology that keeps the cost of the tool down. They deliver excellent power and have been the standard in professional power tools for decades. The downside is that they are less efficient than their brushless counterparts, meaning they may generate more heat and offer slightly less runtime per battery charge. We did notice the tool warming up during prolonged, heavy use, but never to an alarming degree.
One user noted seeing sparks from the motor housing when starting and stopping the tool. It’s important to clarify that this is perfectly normal for a brushed motor. It’s the result of the carbon brushes making and breaking contact with the motor’s commutator. While it can be disconcerting for those unfamiliar with it, it is not a sign of a defect. What elevates this brushed design is Milwaukee’s REDLINK Intelligence. This onboard electronic system acts as the brain of the tool, facilitating communication between the tool, battery, and charger. It constantly monitors the tool for overload and overheating, protecting your investment from damage. This smart technology gives a modern edge to the traditional motor, ensuring you get maximum performance and longevity out of both the tool and your M18 batteries. It’s a clever fusion that provides reliable power with a layer of sophisticated protection.
What Other Users Are Saying
Across the board, the user sentiment for the Milwaukee 2656-20 M18 1/4 Inch Hex Impact Driver is overwhelmingly positive, particularly regarding its longevity and power. One user, who has owned the tool for over five years, states that its performance “is the same as the day you buy them,” calling Milwaukee tools “superb quality” and “worth the price tag.” This sentiment is echoed by another who has abused the M12 version for six years in an automotive shop and loves the “extra power” this M18 version provides. These long-term testimonials speak volumes about the tool’s durability.
However, a recurring negative theme in user feedback has less to do with the tool itself and more with the condition upon arrival when purchased from certain online sellers. Several users reported receiving products that were clearly used, greasy, scratched, or had bent battery pins, despite being advertised as new. Others received tools with broken triggers or floppy directional switches right out of the box. While our test unit arrived in perfect condition, this feedback is a critical reminder for buyers to be vigilant about where they purchase from and to inspect the tool immediately upon receipt. It highlights a potential pitfall in the online marketplace rather than an inherent flaw in Milwaukee’s manufacturing.
How Does the Milwaukee 2656-20 Compare to the Competition?
The Milwaukee 2656-20 M18 1/4 Inch Hex Impact Driver occupies a specific niche in the market—it’s a powerful, reliable, and affordable entry into a professional-grade battery platform. But how does it stack up against other popular choices? We looked at three key alternatives to see who might be better served by a different tool.
1. Milwaukee M18 Fuel 1/4 HEX Impact Driver KIT
The M18 Fuel is the direct, top-of-the-line upgrade from the 2656-20. The key difference is the brushless motor, which delivers more power, greater efficiency, and a longer overall lifespan. It typically boasts higher torque ratings and features multiple speed and torque settings (Drive Control), allowing for more refined work on delicate materials. This kit also comes with a battery and charger, making it a complete package for someone new to the M18 system. If you are a professional who uses an impact driver daily and demands the absolute best in performance and features, the extra investment for the Fuel version is easily justified. For the serious DIYer or pro on a budget, the 2656-20 offers a huge slice of that performance for a fraction of the cost, especially if you already own M18 batteries.
2. DEWALT XTREME 12V MAX Impact Driver Kit
This DeWalt driver competes on a different axis: size and platform voltage. As part of a 12V system, the entire tool is significantly smaller and lighter than the 18V Milwaukee. This makes it an outstanding choice for electricians, HVAC technicians, or anyone who values ultimate portability and needs to work in extremely tight spaces. However, this compactness comes at the cost of power. While surprisingly capable for its size, it simply cannot match the raw torque of the 18V Milwaukee 2656-20. If your primary tasks involve driving large lag bolts or breaking loose stubborn automotive fasteners, the Milwaukee is the clear winner. If your work is primarily assembling cabinets or electrical boxes, the DeWalt’s compact form factor might be more appealing.
3. Milwaukee M18 Brushless Cordless Impact Driver Kit
This model, the 2850-21P, represents the perfect middle ground. It features a brushless motor, offering better runtime and efficiency than our reviewed 2656-20, but it is a step down from the premium “Fuel” line in terms of raw power and features. It provides a noticeable upgrade in technology from the brushed 2656-20 without the top-tier price of the Fuel model. This is an excellent choice for a user who is buying into the M18 platform for the first time and wants a more modern tool with a battery included, but doesn’t need the absolute peak performance (and cost) of the Fuel series. It’s a fantastic balance of modern features and value.
Final Verdict: A Timeless Tool for the Smart Worker
After extensive hands-on testing, it’s clear that the Milwaukee 2656-20 M18 1/4 Inch Hex Impact Driver remains a formidable and relevant tool, even years after its initial release. Its blend of raw power, rock-solid durability, and comfortable ergonomics makes it a joy to use on any job site. While it may lack the bells and whistles of the latest brushless models, its brushed motor is a proven workhorse, and the addition of REDLINK intelligence provides a modern layer of protection. Its greatest strength lies in its value proposition, especially for those already invested in Milwaukee’s M18 battery platform. This is the perfect tool for the serious DIYer, apprentice, or professional who needs a dedicated, no-nonsense impact driver that will perform reliably day in and day out without breaking the bank.
If you need a powerful, comfortable, and incredibly durable impact driver and already own M18 batteries, this tool is one of the best values on the market. It delivers professional-grade performance that will speed up your workflow and save your wrists. We wholeheartedly recommend it as a foundational tool for any serious workshop. To add this reliable workhorse to your collection, you can check the latest price and secure yours today.
Last update on 2025-11-11 / Affiliate links / Images from Amazon Product Advertising API